The speaker addresses a common question about calorie intake on training versus rest days. While it's generally acceptable to lower calorie intake on rest days, the speaker offers an advanced tip for those training hard, particularly during bulking phases. They suggest keeping rest day calories similar to training day calories to enhance recovery. This approach ensures that the body has enough nutrients to recover effectively, rather than just resting. The speaker notes that drastically reducing calories on rest days might be suitable for fat loss, but for optimal recovery, especially when bulking, maintaining higher calorie intake is beneficial. This strategy helps in providing the body with the necessary energy and nutrients to repair and grow muscles, thus maximizing the benefits of the training regimen.